The IESG has approved the following document: - 'Advertising IPv4 Network Layer Reachability Information with an IPv6 Next Hop' (draft-ietf-bess-rfc5549revision-06.txt) as Proposed Standard
This document is the product of the BGP Enabled ServiceS Working Group. The IESG contact persons are Alvaro Retana, Deborah Brungard and Martin Vigoureux. A URL of this Internet Draft is: https://datatracker.ietf.org/doc/draft-ietf-bess-rfc5549revision/ Technical Summary Multiprotocol BGP (MP-BGP) specifies that the set of usable next-hop address families is determined by the Address Family Identifier (AFI) and the Subsequent Address Family Identifier (SAFI). The current AFI/SAFI definitions for the IPv4 address family only have provisions for advertising a Next Hop address that belongs to the IPv4 protocol when advertising IPv4 Network Layer Reachability Information (NLRI) or VPN-IPv4 NLRI. This document specifies the extensions necessary to allow advertising IPv4 NLRI or VPN-IPv4 NLRI with a Next Hop address that belongs to the IPv6 protocol. This comprises an extension of the AFI/SAFI definitions to allow the address of the Next Hop for IPv4 NLRI or VPN-IPv4 NLRI to also belong to the IPv6 protocol, the encoding of the Next Hop to determine which of the protocols the address actually belongs to, and a new BGP Capability allowing MP-BGP Peers to dynamically discover whether they can exchange IPv4 NLRI and VPN-IPv4 NLRI with an IPv6 Next Hop. Working Group Summary The WG supports the publication of this Document. This Document was progressed rapidly in to address a simple gap in the current specifications compared to all known deployed implementations. This document was coordinated with the chairs of the IDR working group. It was progressed in the BESS working group since most applications for it reside within the charter of BESS. Document Quality The document was developed as a response to an observed gap in the current specifications that did not reflect deployed implementations. The ability to advertise an IPv6 next hop in an IPv4/VPN-IPv4 NLRI is something that has been implemented and deployed and this document reflects the need to standardise the procedures to ensure future interoperability. It also introduces a new capability advertisement for this. Personnel The document shepherd is Matthew Bocci The responsible Area Director is Martin Vigoureux _______________________________________________ BESS mailing list BESS@ietf.org https://www.ietf.org/mailman/listinfo/bess